Researcher Sergey Crook and a schematic of the material structure. According to the Australian National University (ANU) website, the university and the University of California, Berkeley, have developed a unique nanomaterial that emits light in unusual ways when heated. This result is expected to drive the revolution in the solar cell industry, bringing a thermo-photovoltaic cell that can convert radiant heat into electricity and collect heat in the dark to generate electricity. According to Sergey Crook of the ANU Institute of Physics and Engineering, the new metamaterials overcome some technical barriers and help open the potential of thermo-photovoltaic cells, and it is expected that the efficiency of thermo-photovoltaic cells will be more than twice that of conventional solar cells. . Thermophotovoltaic cells generate electricity that does not require direct sunlight, but instead collect heat in the form of infrared radiation from the surrounding environment. They can recover the heat radiated from the engine or combine on-demand power generation with the combustion engine. The new metamaterial has a nanometer-scale microstructure consisting of gold and magnesium fluoride. It emits radiation in a specific direction and changes shape to emit special light. However, conventional materials can only generate heat in the form of full-range, wide-range infrared light waves. Therefore, it is ideal to use this kind of material to make emitters that match thermo-photovoltaic cells. The extraordinary performance of the material comes from its novel physical properties. Its magnetic properties are hyperbolically distributed, indicating that electromagnetic radiation propagates in different directions. Natural materials such as glass or crystal, the radiation shape is a simple spherical or ellipsoidal, and the metamaterial has a different radiation pattern because of the strong interaction between the material and the magneto-optical element. Crooke predicts that these new materials will have such amazing properties. His team collaborated with the University of California, Berkeley, which specializes in the manufacture of such materials, to use cutting-edge technology to create this material. The basic unit of material is less than humans. 12,000th of hair section. Researchers say that the efficiency of thermo-photovoltaic cells based on such metamaterials can be further increased if the distance between emitters and receivers can reach nanometers. In this configuration, radiant heat is transmitted between the two more efficiently than conventional materials. The related papers were published in the recent "Nature & Communications" magazine. (Reporter Chang Lijun)
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Commercial lighting is a term used to describe lighting that is used in commercial spaces, including auto dealerships, distribution centers, churches, factories, offices, and warehouses. Unlike residential lighting, commercial lighting is made to withstand more abuse and has a longer lifespan.
While the focus of residential lighting is often on aesthetics, commercial lighting is task orientated. Commercial lighting systems are designed based on what the application is. For example, in an office-type setting, you may see task lighting, which illuminates specific areas where employees need concentrated light to be able to perform their jobs.
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